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Date: Mon, 08 Jan 2007 18:59:12 -0800
From: Julian Elischer <julian@elischer.org>
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To: Lowell Gilbert <lgusenet@be-well.ilk.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: TCP Checksums in mbufs
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Lowell Gilbert wrote:
>
> 
> Actually, it is as easy as that.  And it's exactly the way this kind
> of case is usually handled.

almost.. you need to account for the fact that our computers are 2-s 
compliment machines and the checksum is a 1-s compliment checksum

> 
>> I think it's given in one of the RFCs but  I think it may also
>> be used in the tcpmss port, or possibly the mss fixup code in ppp.
>> I know I've used it somewhere but forget where :-)
> 
> RFC 1071, but that doesn't include the code.  Just the one-sentence
> explanation of what to do.  [And several more sentences of
> explanation...]  
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